Software Alternatives, Accelerators & Startups

Roundcube VS Apollo.io

Compare Roundcube VS Apollo.io and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Roundcube logo Roundcube

Web-based IMAP email client

Apollo.io logo Apollo.io

Apolloโ€™s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.
  • Roundcube Landing page
    Landing page //
    2022-10-18
  • Apollo.io Landing page
    Landing page //
    2023-05-08

Roundcube features and specs

  • Open Source
    Roundcube is free and open-source software, allowing for extensive customization and improvements by the community.
  • User-Friendly Interface
    It offers a modern and intuitive webmail interface that is easy to use for users of all technical levels.
  • Extensibility
    Roundcube supports plugins, enabling the addition of new features and functionalities tailored to specific needs.
  • Security
    The platform includes multiple security features such as built-in protection against XSS and CSRF attacks, ensuring a safer email experience.
  • Localization
    It supports multiple languages, making it accessible to users globally.

Possible disadvantages of Roundcube

  • Dependency on External Email Server
    Roundcube requires an external email server to function, which may be a drawback for users seeking an all-in-one solution.
  • Resource Intensive
    Running Roundcube can be resource-intensive, impacting the performance of low-end servers.
  • Complex Setup
    Initial installation and configuration can be complex, requiring technical expertise and familiarity with server management.
  • Limited Mobile Support
    Roundcube's interface is not fully optimized for mobile devices, which may affect the user experience on smartphones and tablets.
  • Maintenance
    Regular updates and maintenance are necessary to ensure security and functionality, which can be time-consuming.

Apollo.io features and specs

  • Comprehensive Database
    Apollo.io offers a vast and up-to-date contact database, which is ideal for lead generation and sales prospecting.
  • Advanced Search Filters
    The platform provides powerful filtering options that allow users to narrow down potential leads by various criteria, making it easier to target specific audiences.
  • Integration Capabilities
    Apollo.io integrates seamlessly with popular CRM tools like Salesforce and HubSpot, streamlining the workflow for sales teams.
  • Email Tracking
    The email tracking feature helps sales teams monitor engagement and follow up effectively, thereby increasing the chances of closing deals.
  • Customization and Automation
    Users can customize outreach templates and automate follow-up sequences, improving efficiency and ensuring consistent communication.

Possible disadvantages of Apollo.io

  • Pricing
    The platform can be expensive, especially for small businesses or startups with limited budgets.
  • Data Accuracy
    Some users report that contact information can occasionally be outdated or inaccurate, leading to ineffective outreach.
  • Learning Curve
    The platform's extensive features may require a significant amount of time to learn and utilize effectively, posing challenges for new users.
  • Support Limitations
    Customer support may not be as responsive or comprehensive as some users would like, potentially leading to delays in issue resolution.
  • Overdependence on Technology
    Relying too much on the platform's automation features can sometimes lead to reduced personalization in outreach efforts, which can affect engagement.

Analysis of Roundcube

Overall verdict

  • Roundcube is a solid choice for those looking for a customizable and reliable webmail solution. Its open-source nature makes it a preferred option for developers and organizations seeking a cost-effective and adaptable solution.

Why this product is good

  • Roundcube is a popular web-based email client known for its user-friendly interface and rich feature set. It is an open-source application, which allows customization and flexibility for various use cases. With a robust plugin environment, Roundcube can be extended to fit specific needs, and it supports standards-compliant email protocols such as IMAP. Additionally, its responsive design ensures accessibility across different devices.

Recommended for

    Roundcube is recommended for small to medium-sized organizations, educational institutions, and individuals looking for a versatile and user-friendly webmail client. It is especially suitable for those who require an open-source solution that can be tailored to specific needs through plugins and custom development.

Analysis of Apollo.io

Overall verdict

  • Apollo.io is generally well-regarded in its space, especially for businesses looking to enhance their sales intelligence and outreach processes. Most users appreciate its robust feature set and user-friendly interface.

Why this product is good

  • Apollo.io is considered good by many users because it provides a comprehensive sales engagement platform with features like a vast and accurate database of contacts, powerful searching and filtering tools, and automated outreach capabilities. It helps sales teams improve their prospecting efficiency and effectiveness.

Recommended for

  • Sales teams looking to streamline their prospecting efforts
  • Businesses seeking a reliable source of contact data
  • Organizations that want to automate and optimize their outreach campaigns
  • Companies of all sizes aiming to enhance their lead generation strategies

Roundcube videos

Siteground Webmail Review: Login Access Email Account and Roundcube Overview

More videos:

  • Review - Roundcube Webmail 2018 Review, Free Download For Windows

Apollo.io videos

Free software to find email addresses - apollo.io review

More videos:

  • Review - โ€œFeature Fatigue Kills UXโ€ by Lily Chen, senior software engineer at Apollo.io

Category Popularity

0-100% (relative to Roundcube and Apollo.io)
Email
100 100%
0% 0
Lead Generation
0 0%
100% 100
Email Clients
100 100%
0% 0
Sales Tools
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Roundcube and Apollo.io

Roundcube Reviews

Top 15 Self-hosted open-source free web-based email clients
RoundCube features LDAP connection, address book management, IDNA and SMTPUTF8 support, share/ global IMAP folders, import/ export options, threaded message listing and more.
Source: medevel.com
15 Best iRedMail Alternatives 2021
Roundcube also offers many of the functions you can find on iRedMail including message searching, folder manipulation, multiple sender identities, support for the external SMTP server, import/export, and unlimited messages and users.
Top 10 Webmail Clients in 2021
RoundCube RoundCube Webmail is a PHP webmail client that will work with a MySQL or Postgres database. One appealing feature it brings is the ability to skin the application-style user interface using XHTML and CSS 2. The app is a multi-language IMAP client whose features include MIME support, address book, editable folder search and spelling check, and it works in your web...
Source: www.plesk.com
5 open source webmail clients for browser-based email
I really like Horde's mobile UI, and the mail client was pretty easy to install separate from the rest of it. SquirrelMail and RoundCube are challenging to use on a mobile device. RoundCube has a supposed mobile plugin but I could not get it to work.
Source: opensource.com

Apollo.io Reviews

  1. michelleturner
    ยท Managing Director at Nuvoro Digital ยท
    Apollo for automated outreach

    We use Apollo with our Sales and BDR team to manage our cold outreach. The strength of the platform is the sequences and cadences that you can set up. Compared to other tools we have used in the past like Salesloft the UI is much easier to navigate. The main limitation is that the quality of data isn't as vast and often I can find prospects on Linkedin but not in Apollo.

    ๐Ÿ Competitors: SalesLoft
    ๐Ÿ‘ Pros:    Creating email sequences|Ab testing of emails|Good user experience
    ๐Ÿ‘Ž Cons:    Data quality is lacking sometimes|Onboardin process was cumbersome

Best AI Prospecting Tools for B2B Sales in 2026
What is the best AI prospecting tool for B2B sales in 2026? The best tool depends on your team's specific situation. toflow.ai is a strong fit for multi-channel outreach across email, LinkedIn, and WhatsApp, and is the only platform in this list with native MCP support for Claude and ChatGPT-based prospecting. Apollo.io is the leading option for teams needing a large contact...
Source: toflow.ai
11 Apollo.io Alternatives and Competitors 2024
FAQWhatโ€™s better than Apollo.io?What Apollo.io competitors are better for lead generation? What is Apollo.io used for?
Source: evaboot.com
Top 15+ Apollo.io Competitors & Alternatives [2024]
Unlike some other Apollo.io competitors, Reply is also great for engaging potential customers. The platform boasts multichannel outreach options and cloud calling. You can also use it to send personalized outreach, including videos created on Vidyard.
Source: www.kaspr.io
15 Best Apollo.io Alternatives to Find Verified B2B Leads (2024)
FindThatLead is affordable, with plans for individuals and small teams. If you just need the basic contact details for leads, FindThatLead is a practical alternative to look at instead of Apollo.io.

Social recommendations and mentions

Based on our record, Apollo.io should be more popular than Roundcube. It has been mentiond 69 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Roundcube mentions (17)

  • Ask HN: Who Is the Best Paid Email Provider? Why?
    Iโ€™m also a happy Migadu customer, and I have never had to interact with their support. I use it for most of my domains, except for a few that are work-related. For Webmail, I have been meaning to try https://roundcube.net You can try it out at https://www.pikapods.com/apps#email to see if this works for you. - Source: Hacker News / 12 months ago
  • Proton Mail says Outlook for Windows is Microsoft's new data collection service
    I have tried several, and liked none of them. I'm currently on Geary, but it's lacking in functionality, and it has things like search results being a bit different upon each of my searches. Starred messages cannot be shown on top. Eyeroll. I think Evolution and Thunderbird are the top contenders, and of the self-hosted ones, Roundcube. https://wiki.gnome.org/Apps/Geary https://roundcube.net/. - Source: Hacker News / over 2 years ago
  • Universal Inbox / Email Client
    You could try a standalone email client like Mozilla's Thunderbird, or if you're experienced running a web server, you could check out something like Roundcube. I suppose you could even run it locally if you're familiar with PHP and/or Docker. Source: about 3 years ago
  • Thunderbird 115 Supernova Preview: The New Folder Pane
    What I really miss is a "web companion" for Thunderbird, basically something like https://roundcube.net/ or https://www.horde.org/apps/webmail, but a bit more powerful and with better UX. I'd like to use a Google Addressbook within such app, for example (there is a completely outdated plug-in for RoundCube). Another important thing would be powerful and fast search. - Source: Hacker News / over 3 years ago
  • I Want To Serve My Email Locally From My Linux Server With a Web-Based Interface
    Alternatively if you want to keep what you have I wouldn't recommend using the SoGO even though it's the nicest and most modern option. Mainly because it's a full groupware client and will require a lot of configuration. Instead using Roundcube is probably your best option. Source: over 3 years ago
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Apollo.io mentions (69)

  • Enriching Free Trial Signups: The PLG Data Stack for Turning Inbound Users Into Qualified Pipeline
    Personal email domains destroy this. Clearbit's Enrichment API returns a null company when it hits gmail.com. Apollo routes personal domains straight to a consumer bucket and skips B2B fields entirely. Even PDL's /person/enrich endpoint โ€” the most permissive of the major providers โ€” gives you around 32% hit rate on Gmail addresses versus 74% on corporate domains. I measured this across 6,200 signups for a... - Source: dev.to / about 2 months ago
  • Clearbit Is Now HubSpot-Only: A 1-to-1 API Migration Map for Teams Getting Locked Out
    A few things worth flagging: PDL beats Clearbit's historical rates for US and Western European companies, but drops to ~52% match rate for Japan and South Korea specifically. Apollo underperforms on raw company matching but returns significantly more contacts per domain in Prospector-style queries than Clearbit's Prospector ever did โ€” the tradeoff is more stale titles in the result set. Hunter.io is fast and cheap... - Source: dev.to / about 2 months ago
  • Auto-Enriching Your CRM on New Contact Creation: A No-Code Webhook Playbook
    One thing comparison guides consistently get wrong: Clay is not an enrichment API. It's a waterfall orchestration tool that calls People Data Labs, Apollo, Clearbit, and others in sequence for you. It's useful, but it adds 2โ€“8 seconds of latency per row in my runs and costs more per match than going direct. For a CRM webhook flow where you need sub-second enrichment calls, Clay is the wrong layer to hit first. - Source: dev.to / 2 months ago
  • How to Build an OSINT-Powered B2B Prospecting Workflow in 2026 (Without Getting Banned)
    Last year I ran the same LinkedIn Sales Navigator export through three enrichment APIs. Apollo matched 61% of the emails. Hunter.io matched 54%. An OSINT-first pipeline I'd built in n8n โ€” pulling from public sources before hitting any paid API โ€” matched 79% and cost roughly $0.003 per contact. The delta wasn't magic. It was sequence. - Source: dev.to / 3 months ago
  • LinkedIn Scraping Is Dead: 5 Legal, ToS-Safe Alternatives That Actually Work in 2026
    Despite having its LinkedIn Page removed in 2025, Apollo remains a functional enrichment and outreach platform with 275M+ contacts. The free tier includes 10,000 credits and the $49/month basic plan is the cheapest entry point for a combined enrichment-plus-sequencing workflow. Apollo's data collection methods have attracted LinkedIn's attention, but the product continues to operate. The risk I'd assign it:... - Source: dev.to / 3 months ago
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What are some alternatives?

When comparing Roundcube and Apollo.io, you can also consider the following products

Rainloop - RainLoop is a web based email client.

ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.

Zimbra - Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

Lusha - Search less. Sell more.

Mailpile - Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.

Hunter.io - Find all the email addresses related to a domain